The SharpStone Clear Top Grinder Pollinator 2.2″ is a new design that allows you to see when the job is done. No more guessing or making a mess to see if your herb is sufficiently mulched. -Made from Aircraft Grade Aluminum Rod using the newest in CNC machining technology. -Top features high density acrylic so you can watch it grind. -Anodized for a smooth finish; this means no wear or smudge marks. -Razor sharp Diamond Cutting Blades for extreme efficiency. -Stainless steel pollen screen allows for only the finest pollen to fall to the bottom catch. -Powerful Neodymium Magnets for incredible closure. -Thin poly ring around top grinder section, for smooth grinding with no friction. -Comes with protective pouch and pollen scraper. SharpStone® | The number one rated affordable tobacco & herb grinder. SharpStone is one of the most recognized brands on the market, and for good reason. These grinders are top notch for the cost conscientious buyer offering great functionality for a great price. Extra features have been added to their grinders such as patent numbers and security strip on their packaging so that you know you’re getting an authentic SharpStone, and not a cheap counterfeit.